Improvement in glass-grinding machines



T. HIPW'ELL.

GLASS-GRINDING MACHINE.

-N.180,584. Patented Aug'.1,18'1a.. l

NITED STATES THOMAS HIPW'ELL, OF BRIDGETON, NEW JERSEY, ASSIGNOR TO GOHANSEY GLASS MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN GLASS-GRINDING MACHINES.

Specification forming part of Letters Patent No. l 80,584, dated August 1, 1876; application filed March 13, 1876.

To all whom @t may concern.-

Be it known that I, THOMAS HIPWELL, of Bridgeton, Cumberland county, New Jersey, have invented a Machine for Grinding the Months of Glass Vessels, of which the following is a specification:

The object of my invention is to truly, evenly, and rapidly grind the edges of Vthe mouths of first jars, bottles, and other vessels, and this object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawing, in which- Figure 1 is a side view of the machine partly in section; Fig. 2, a sectional plan; and Figs. 3 and 4, detached views, illustrating parts of the machine.

The frame-work consists, in the present instance, of the base A, the opposite posts B and B', and the two cross-bars, D and D. A vertical shaft, E, turns at its lower end in a step, a, on the base, and at its upper end in suitable bearings on the cross bars D D. This shaft, which carries the grinding-disk I, is geared to another vertical shaft, F, which turns above in bearings on the said cross-bars D D', and below in the hub e of a cog-wheel, G, which is always stationary, as it is connected to the frame-work in the present instance by abar, b. Below this cog-wheel, and to the same shaft, is secured a hub, i, from which project a number of arms, wrsix in the present instanceeach arm being bent at the end so as to afford two bearings for a spindle, K, and for the reception and vertical continement of a pinion, M, the teeth of which gear into those of the stationary wheel G. Each spindle K can slide freely in its bearings in the end of the arm m, as well as in its pinion, but cannot turn independently of the latter. To the lower end of each spindle K is secured a iiange-d cap, a, so adapted to the baseA of the inverted vessel X that it shall serve as a ch'uck through the medium of which the said vessel is rotated on its own axis. To the lower end of the vertical shaft F is secured a plate, N, having as many openings as there are spindles K, each opening being central with one of the said spindles, and being arranged to receive and guide the neck of the vessel X. As the two shafts E and F are rotated in contrary directions, the former rapidly, and the latter slowly, the vessels X are carried round in a circle, with the edges of their mouths hearing on the grinding-disk I. At the same time each vessel turns .on its own airis, owing to the pinion M of each spindle K gearing into the stationary cog-wheel G, the Weight of the spindle and its cap a causing sufcient friction 011 the inverted base ofthe vessel to insure the turning ofthe same with the spindle.

On reference to Fig. 4 it will he observed that the edge of each opening in the plate N for receiving the neck of the vessel has lips t projecting inward and downward for limiting the extent to which the edge of the vessels mouth shall be ground away, the vessel being arrested in its downward movement by the contact of its shoulder on the neck with these lips, which are essential in all eases where a determinate distance between the ground edge and a shoulder on the jar or bottle is required.

VAs the shaft F revolves at a comparatively slow rate of speed, an attendant or attendants can remove the ground jars and apply others unground to the machine without stoping the same, the removal of each vessel being accomplished by sim1 )ly raising its spindle and cap and withdrawing the neck of the vessel from the opening in the plate N.

A prominent advantage of the planetary movement imparted to the series of vessels is the effective distribution ot' the granular grinding material on the face ot' the disk; but I do not desire to claim, broadly, mechanism for causing a series of articles to be ground to revolve around a common center, While each revolves on its own axis, as this is well known but I claim as my inventionl. In a lmachine for grinding the mouths of vessels, the combination of a grinding-disk with a plate, N, having openings for receivirg the necks of the vessels, and with caps n ar d spindles K, through the medium of which, and suitable gearing-each vessel is caused to revolve on its own axis while it is carried around in a circle with the plate N, all substantially as set forth.

2. The combination of the shaft F, and stationary oog-Wheel G, the spindles K, Gaps n, and pinions M, carried by the arms m on the said shaft, and the plate N with its openings7 all substantially as set forth.

3. The combination of the plate N and its openings, with lips t projecting from the edge of each opening, as set forth.

In testimony Whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

THOMAS HIPWELL.

Witnesses:

S. T. BOBINE, Jr., .DANIEL SHARP. 

